The TV star was joined by his family backstage when he appeared on The Jonathan Ross Show; at the time, he took to Instagram to share a photo - and fans were thrilled!
WATCH: David Walliams makes rare comment about son during interview
Beneath the snap - in which David, his mum and his sister cosied up to Robbie - David added the hilarious caption: "My mum and sister wanted a picture with @robbiewilliams and someone had to ruin it."
David shared the snap on Instagram
Needless to say, fans flocked to the comment section to express their delight. One wrote: "Your family all have the same gorgeous smile," and another added: "Wonderful. Your mum is adorable." A third pointed out just how alike David's sister and mum looked, commenting: "Your sister really looks like your mum!"
On the show, David opened up about his comedy career and his recent reconciliation with Matt Lucas. The pair worked together for many years and are behind the hit comedy series Little Britain, however first fell out in 2005 and have suffered an estranged relationship since then.
David and Matt have reconnected
By 2011 they had stopped speaking completely. Matt even revealed in his biography that there was friction between them and that they were "often at loggerheads." Thankfully, in June, David revealed to The Sun that he and Matt had started speaking again.
The father-of-one told the publication that: "It has been great seeing much more of Matt. He is spending more time in the UK, so it has been a lot easier to see each other."
But fans shouldn’t get too excited just yet – David also added that although he is enjoying spending more time with his old friend, there are no immediate plans to work on new material just yet. The Britain's Got Talent judge added: "We hope to do something together in the near future, but there is no immediate plan."
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